[Healeys] Dual Brake System

Pieter and Linda pieters at pt.lu
Thu Dec 17 08:46:53 MST 2009


I have the wilwood  1" bore tandem master cylinder in my BJ7 combined  
with four pot front calipers and rear discs. It is a straight bolt in  
fit and easy to plumb but the pedal pressure is high. I would recomend  
a 7/8 bore. I am fitting a tandem brake booster over the winter so we  
will see what the pedal pressure is like then,
cheers
Pieter
On 17/12/2009, at 8:02 AM, Alan Seigrist wrote:

> Ron -
>
> The easiest solution is to get a tandem master cylinder.  Wilwood  
> makes one
> which will fit in the standard hole. I don't recall the standard  
> bore, but I
> think wilwood makes them in a couple different bore sizes.  This one  
> is a 1"
> bore:
>
> http://www.polyperformance.com/shop/Wilwood-Combination-Remote-Tandem-Master-Cylinder-p-2322.html
>
> With the tandem cylinder, the plumbing is simpler, and there is no
> modification necessary to the pedal box.
> Alan
>
> '52 A90
> '53 BN1
> '59 Jag Mk IX
> '64 BJ8
>
>
> On Thu, Dec 17, 2009 at 8:51 AM, Ron Mitchell <healeyron at yahoo.com>  
> wrote:
>
>> While attending Encounter this year I had a leaking Rear Wheel  
>> Cylinder
>> cause
>> a complete Brake Failure while backing out of a downhill parking  
>> place at
>> the
>> Hotel.  The result was $4700 damage to the rear of my MkII BN7  
>> caused by
>> the
>> Stone Wall that didn't move when I hit it.  I know the first thing  
>> your
>> going
>> to reply is why I didn't use the Parking Brake to stop before  
>> hitting the
>> wall.  I was in the process of doing that when the impact occurred.
>>
>> I'm
>> contemplating converting to a Dual Brake system.  My question is  
>> has any
>> one
>> on this list knowledge of a proper dia. and stroke Master Cylinder  
>> that
>> will
>> function on a Healey with Manual  Disc Brake Fronts and  Drum Brake  
>> Rears?
>> I
>> did see a Healey at Encounter in 2008 that had converted to a Dual  
>> System
>> but wasn't able to find the owner to enquire as to the source for his
>> components.  I've also heard that someone in Texas has done this  
>> but I
>> haven't
>> been able to find out who.
>>
>> Any information either off list or on list would
>> be appreciated.
>>
>> Ron M.
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